1 ORNL DAAC MODIS Web Service MODIS subsets through Simple Object Access Protocol (SOAP) Suresh Kumar ORNL DAAC User Working Group Meeting 2009 May 19 th 2009

2 MODIS Web Service Get MODIS Subsets through machine to machine interaction SOAP (Simple Object Access Protocol) based Retrieve Subsets using: Command line ( Perl) Workflows (Kepler) JAVA desktop software User Comment: “Anyway - for what it's worth I think the [MODIS] web server [service] is a really great idea and of potentially large value to the scientific community - if you need a letter of support to help keep it running I would be happy to provide one.”

3 Demo MODIS Web ServiceMODIS Web Service – JAVA client

4 Example Usage: What is the MODIS land cover value at N, W Perl Client

5 Kepler- Scientific Workflow Check in Google Maps for aerial photo of this locationGoogle Maps Step A: Provide inputs such as Product Band Latitude, Longitude Size of the subset A B C Step B: Kepler uses the MODIS Web Service to find all dates that have MCD12Q1 (Land Cover) data for location N, W Step C: Kepler uses the MODIS Web Service to get the subsets for each available MODIS date. The subset is displayed